A Small Hot Tub for a Small Backyard

Small Hot Tub

Have you ever dreamed of having a hot tub in your backyard, but thought it was impossible because you don’t have much space? Think again! With a small hot tub, you can enjoy the soothing benefits of warm water and bubbles, even in a tiny backyard or patio.


In this article, I’ll explore the world of small hot tubs and show you how to build one that fits your space, your budget, and your personal style. From selecting the right size and shape to choosing the best materials and features, I’ll guide you through the process of creating your own little oasis of relaxation and rejuvenation. So, let’s dive in and discover the joys of a small hot tub!

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How Big is a Small Hot Tub?


This may sound an odd question, but honestly, it is not. The size of a hot tub can vary depending on your specific needs and the available space in your backyard. However, a common size range for small hot tubs is between two to four-person capacity. This means that the hot tub can comfortably seat two to four people at once.


The dimensions of a small hot tub can also vary, but generally, a small hot tub would be 6’ x 6’ maximum, perhaps 7’ by 7’ at a push.


When choosing the size of your hot tub, consider how many people you will typically have using it at once and the amount of space you have available in your backyard. Keep in mind that you’ll need to allow for a buffer zone around the hot tub for safety and ease of use. Ultimately, the size of your small hot tub should be determined by your needs and preferences – especially if you are going to build your own hot tub, it should be built to your exact requirements.

What materials should I build my small hot tub from?


Building a hot tub from ICF (Insulated Concrete Forms) blocks is a great option for those who are looking for a durable, long-lasting, and energy-efficient hot tub that can be customized to fit any backyard. ICF blocks are made of two layers of rigid foam insulation that are held together by webbing, creating a sturdy and insulated structure that is perfect for hot tubs.


To start building your hot tub, you will first need to determine the size and shape that you want. Once you have your dimensions, you can purchase the necessary ICF blocks and start building your structure. You can cut and shape the blocks using a saw, making it easy to create any size or shape you desire.


Next, you will need to lay a base of gravel or crushed stone to ensure proper drainage and prevent water from accumulating around the base of the hot tub. Then, lay the ICF blocks on top of the base, ensuring that they are level and properly aligned.

Once the structure is in place, you can begin installing the plumbing and electrical components. This may include a water pump, heater, and jets. You can also choose to install LED lights, which will add ambiance and make it easier to use the hot tub at night.


After the plumbing and electrical components are installed, you can begin pouring concrete into the ICF blocks. This will give the structure added strength and stability. Once the concrete is dry, you can begin finishing the hot tub with tile, stone, or other materials of your choice.


Building a hot tub from ICF blocks may take some time and effort, but the end result is a custom-built hot tub that is built to last. Additionally, the insulating properties of the ICF blocks will help keep the water warm and reduce energy costs over time. With proper maintenance, your small hot tub can provide years of relaxation and enjoyment in your own backyard.

Heating Small Hot Tubs


When it comes to heating small hot tubs, there are several options to consider, including electric heaters, gas or propane heaters, and air source heat pumps. Each type of heating system has its own advantages and disadvantages, so it’s important to weigh the pros and cons before making a decision.


Electric heaters are a popular choice for small hot tubs because they are easy to install and maintain. These heaters use electricity to heat the water, and they are generally built into the hot tub’s spa pack.


Gas or propane heaters are another option for heating hot tubs. These heaters are typically more powerful than electric heaters and can heat the water more quickly. However, they are also more expensive to install and maintain, and they require a constant supply of gas or propane. Gas or propane heaters are a good option if you plan to use your hot tub frequently and want to keep the water at a constant temperature.


Air source heat pumps are a relatively new option for heating hot tubs, but they are becoming increasingly popular due to their energy efficiency. These heat pumps use the heat from the air outside to heat the water, and they can be up to 80% more efficient than traditional electric heaters.


However, air source heat pumps are more expensive to install than electric heaters, and they may not work as well in very cold temperatures.


Ultimately, the best type of heating system for your small hot tub will depend on your individual needs and preferences. Consider factors such as cost, efficiency, and ease of use when making your decision, and don’t hesitate to consult with a professional if you need help choosing the right heating system for your hot tub.




Plumbing Considerations for Small Hot Tubs


You will need to consider the placement of the jets and other water features for your hot tub. The placement of these features can affect the flow of water and the overall performance of the hot tub. It’s important to ensure that the jets are placed in the right location and that the water flow is optimal.


Another important plumbing consideration is the filtration system. A proper filtration system is essential for keeping the water clean and clear, and it will also help extend the life of the hot tub. The filtration system may include a skimmer, which will remove debris from the water, as well as a pump and filter to circulate and clean the water.


Finally, you will need to consider the type of plumbing materials you will use. PVC pipes and fittings are a common choice for hot tub plumbing, as they are durable and resistant to corrosion. You will also need to ensure that the plumbing is properly insulated to prevent heat loss and reduce energy costs.


Overall, plumbing is a crucial consideration when building a small hot tub. By taking the time to plan and install your plumbing properly, you can ensure that your hot tub performs optimally and lasts for many years to come. This is certainly an area I can help with.





Can I Help You?

If I can help you in any way I would love to hear from you. You can get in touch using the form below.

Thanks - Andi


Hi, Andi here. I own Buildahottub.com and also write all of the articles and info pages on the site. Some years back now, I built my own hot tub but struggled to find the information I needed. So, once my tub was complete, I started this website to help others in their own pursuit of hot tub and plunge pools DIY building information.

Today, I've helped over 1000 DIY customers just like you all over the world build hot tubs and pools. Have a good look around the site, there are lots of resources here. Please do get in touch if I can help you. - Cheers, Andi

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